File Systems:?

Short answer: The most common application of the Composite Pattern is in representing file systems. A file system is inherently hierarchical: directories contain files and subdirectories, and those subdirectories can contain further files or subdirectories. The Composite Pattern allows for easy traversal and management of this hierarchical structure.

Real-world example (ShopNest)

Use a GoF pattern in ShopNest only when it removes duplication or makes a change safer—explain the problem it solves in the interview.

Say this in the interview

1. Define — one clear sentence (the short answer above).
2. Example — relate it to a project like ShopNest or your real work.
3. Trade-off — when you would not use it.